30740761 has 2 divisors, whose sum is σ = 30740762. Its totient is φ = 30740760.

The previous prime is 30740753. The next prime is 30740771. The reversal of 30740761 is 16704703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27625536 + 3115225 = 5256^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 30740761 - 2³ = 30740753 is a prime.

It is a super-3 number, since 3×30740761³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (30740771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15370380 + 15370381.

It is an arithmetic number, because the mean of its divisors is an integer number (15370381).

Almost surely, 2^30740761 is an apocalyptic number.

It is an amenable number.

30740761 is a deficient number, since it is larger than the sum of its proper divisors (1).

30740761 is an equidigital number, since it uses as much as digits as its factorization.

30740761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 30740761 is about 5544.4351380461. The cubic root of 30740761 is about 313.2599479816.

The spelling of 30740761 in words is "thirty million, seven hundred forty thousand, seven hundred sixty-one".